I don't like using the Pm system to make a booking, unfortunately I am one of those guys that decides at the last minute I have time to visit a lady, I rarely say days in advance I will go see this girl. I wake up, go to work see a girl I like, maybe give her a heads up that I will be trying to make an appointment but will contact her later on if all goes well, if it doesn't and she can't see me fine, I pick a different lady